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PULSE OPTIMIZATION IN QUANTUM COMPUTING

Absstract of: US20260212249A1

A method and system are presented for pulse optimization in quantum computing (QC) performed by a QC system comprising q qubits (q≥2), each operated by a tunable single-qubit control channel and tunable two-qubit interaction channels. Cost function data for a selected variational quantum algorithm is defined as ƒC(), where is a vector of pulse parameters predefined by: Discretizing a continuous pulse into a pulse sequence of N pulses, each of duration dt, and representing each of single-qubit control and two-qubit interaction pulses by said sequence, where single-qubit control pulse sequence is represented by a time-dependent complex amplitudes dk(t) and two-qubit interaction pulse sequence is represented by a time-dependent complex amplitudes u{k,l}(t); and iteratively varying values of {right arrow over (θ)} while evaluating the cost function ƒC() by measurements of qubits, wherein the pulse parameters at each time bin are independently optimized as free parameters to obtain minimized cost function ƒC().

COUPLING OF QUANTUM DEVICES BY READOUT RESONATORS

Absstract of: US20260213748A1

There is provided an apparatus for simultaneous capacitive and inductive coupling between readout resonators and a transmission line comprising: a transmission line; at least one quantum device; and at least one readout resonator, wherein the at least one readout resonator is configured to couple the at least one quantum device to the transmission line based on a capacitive coupling and an inductive coupling.

Verfahren zur Initialisierung und/oder Auslesung des Quantenzustands eines Qubits eines Quantenprozessors

Absstract of: DE102025102302A1

Die Erfindung betrifft ein Verfahren zur Initialisierung und/oder Auslesung des Quantenzustands mindestens eines, insbesondere mehrerer, Qubits (3) eines Quantenprozessors (2), insbesondere eines Elektron-Spin-Busses, dadurch gekennzeichnet, dass ein adiabatischer elektromagnetischer Puls (7) zur Inversion des Spins des mindestens einen Qubits (3) erzeugt und in den Quantenprozessor (2) eingespeist wird, sowie ein Quantencomputersystem (1) mit einem Quantenprozessor (2), insbesondere einem NV-Quantenprozessor mit Strong-Coupling-Drive, umfassend mehrere Qubits (3) und eine Inversionsvorrichtung (4) zur Initialisierung und/oder Auslesung des Quantenzustands der Qubits (3), welche zur Durchführung des Verfahrens eingerichtet ist.

HIGH SPEED AND HIGH CONSISTENCY REPAIR ACROSS QUANTUM COMPUTING NODES

Absstract of: US20260212253A1

A method for maintaining consistency in an application release for a software application and performing high-speed repair across a cluster of quantum computing nodes is provided. The method may include combining application data associated with the application release into an application bundle and converting the application bundle into a data image. The method may include encrypting the application data. The method may include allocating the cluster of quantum computing nodes for hosting the data image for the application release and entangling the cluster of quantum computing nodes into an entangled state. The method may include releasing the data image to a first quantum computing node, wherein the releasing automatically propagates the data image to each of the quantum computing nodes in the cluster.

AI POWERED DIGITAL AUDIO WORKSTATION USING QUANTUM ALGORITHM

Absstract of: US20260212848A1

An AI-powered multimedia workstation integrates a digital audio workstation (DAW), visual graphics editor, and office productivity tools within a single platform. Operating on an AI/quantum-inspired software system, it performs real-time audio, visual, and data processing. A central AI/Quantum Content DNA Engine enables structural, stylistic, and semantic analysis, separation, and manipulation of multimedia content, including audio, video, images, and text. The workstation features a hybrid control surface with dynamic haptic feedback faders, high-resolution touch displays, and professional audio input/output interfaces. AI functions include automated music composition, intelligent mixing and mastering, cross-modal content generation, and context-aware workflow assistance. Quantum-inspired algorithms accelerate rendering, simulation, and large-scale data analysis. The system supports real-time global collaboration via high-speed network protocols and cross-platform compatibility with external devices and software. By combining AI-assisted and quantum-inspired processing, the workstation enhances creative production, performance, and productivity, providing an integrated environment for professional audio, visual, and office applications.

LASER BEAM THREAD TRAP FOR INDIVIDUAL CIRCULAR RYDBERG ATOMS

Absstract of: US20260213035A1

0000 Systems and methods for performing quantum information processing using a quantum device including a quantum oscillator dispersively coupled to a physical qubit comprising a trapped Rydberg atom are provided. The techniques include laser-trapping an atom using a laser beam focused to a Gaussian waist with a width less than a diameter of an orbital of an outermost electron of the trapped circular Rydberg atom.

HERMETIC JOINING OF ALUMINA CERAMIC TO TITANIUM AND INCORPORATION INTO AN ION TRAP QUANTUM COMPUTING VACUUM SYSTEM

Absstract of: US20260212245A1

0000 Aspects of the present disclosure relate generally to systems and methods for use in the implementation and/or operation of quantum information processing (QIP) systems, and more particularly, to hermetic joining of alumina ceramic to titanium and incorporation into a compact ion trap quantum computing vacuum system and/or method for forming ion trap subsystem for a compact room temperature trapped ion quantum computing system.

EXECUTION OF QUANTUM NEURAL NETWORKS ON DUAL-HELIX QUANTUM ARCHITECTURES

Absstract of: US20260212250A1

0000 A method may include obtaining a quantum neural network with a plurality of network layers and assigning each network layer of the plurality of network layers to a distinct set of quantum nodes physically arranged along two intertwined helices extending along a longitudinal axis of a quantum computing architecture such that adjacent network layers of the plurality of network layers are assigned to sets of quantum nodes on different ones of the two intertwined helices. The method may also include performing one or more quantum computations using the quantum computing architecture.

SYSTEMS AND METHODS FOR IMPROVING EFFICIENCY OF CALIBRATION OF QUANTUM DEVICES

Absstract of: US20260212239A1

0000 Methods and systems for calibrating quantum processors are discussed. A model of a portion of the processor to be calibrated has one or more determinable parameters and an uncertainty for the determinable parameter(s). A measurement procedure is iteratively performed by selecting a subset of possible measurements and generating predicted measurement outcomes and predicted uncertainties for the determinable parameter for each measurement in the subset of possible measurements. Based on the predicted reduction in uncertainty for the determinable parameter, one or more measurements is selected. Instructions are transmitted to the quantum processor to perform the selected measurements, and the results are returned to update the model of the portion of the processor to be calibrated. Once a termination criteria is met, a calibrated value is generated for the determinable parameter. Compensating signals can be applied to devices of the quantum processor to calibrate the devices.

DISTRIBUTED QUANTUM FILE CONSOLIDATION

Absstract of: US20260212237A1

Distributed quantum file consolidation is disclosed. A controlling quantum computing system (QCS) determines to consolidate a quantum file that includes a plurality of qubits implemented on a plurality of quantum computing systems (QCSs) onto a target QCS, the plurality of qubits including at least a first qubit implemented on a first QCS of the plurality of QCSs. The controlling QCS causes a transfer of quantum information contained in each qubit of the plurality of qubits that is not currently implemented on the target QCS to a corresponding qubit on the target QCS. Quantum file update information that indicates the qubits that compose the quantum file are located on the target QCS is communicated to at least the first QCS.

IMPURITY-CENTER-BASED QUANTUM COMPUTER

Absstract of: US20260212247A1

0000 A quantum bit including a quantum dot may in particular include an NV center. A nuclear quantum bit includes at least one nuclear quantum dot, which is typically a nuclear spin afflicted isotope. The quantum dot and nuclear quantum dot include a device for controlling the quantum dot and nuclear quantum dot. Compounded therefrom a quantum register includes at least two quantum bits, and a nuclear quantum register includes at least two nuclear quantum bits. A nucleus-electron quantum register includes one quantum bit and one nuclear quantum bit, and a nucleus-electron-nucleus-electron quantum register includes at least one quantum register and at least two nucleus-electron registers. A higher-level structure, a quantum bus, for transporting a quantum information and a quantum computer composed thereof are part of the disclosure. Also included are methods necessary to fabricate and operate the device.

Multi-Step Quantum Basis State Shift Using Fixed Ancilla Qubits

Absstract of: US20260212252A1

0000 A method and a quantum circuit to be utilised for performing a multi-step quantum basis state shift. For a state vector space having a size of 2, a full shift register has N+1 qubits. A last qubit of the full shift register is a superposition qubit, which allows for defining a superposition of substates. The superposition qubit is used to determine which substates are to be incremented and which substates are to be decremented. Even substates to be incremented can be incremented by simply applying a step of inverting an i+1qubit, namely a step qubit. Similarly, odd substates to be decremented can be decremented by applying the same step of inverting. Remaining steps of the quantum circuit are employed to perform a rearrangement of the even substates to be incremented, the even substates to be decremented, the odd substates to be incremented, and the odd substates to be decremented, such that applying the step of inverting performs the multi-step quantum basis state shift in one go.

MULTI-STEP QUANTUM BASIS STATE SHIFT USING REDUCED NUMBER OF ANCILLA QUBITS

Absstract of: US20260212238A1

0000 A method and a quantum circuit to be utilised for performing a multi-step quantum basis state shift. For a state vector space having a size of 2, a full shift register includes N+1 qubits. A last qubit of the full shift register is a superposition qubit, which allows for defining a superposition of substates. The superposition qubit is used to determine which substates are to be incremented and which substates are to be decremented. Even substates to be incremented can be incremented by simply applying a step of inverting an i+1qubit, namely a step qubit. Similarly, odd substates to be decremented can be decremented by applying the same step of inverting. Remaining steps of the quantum circuit are employed to perform a rearrangement of the even substates to be incremented, the even substates to be decremented, the odd substates to be incremented, and the odd substates to be decremented, such that applying the step of inverting performs the multi-step quantum basis state shift in one go.

METHODS AND APPARATUSES FOR INTERCONNECT FACTORY FOR PHOTONIC INTERLINKS

Absstract of: US20260212248A1

0000 Aspects of the present disclosure relate generally to systems and methods for entangling a first set of interconnect qubits with a second set of interconnect qubits, entangling a first set of memory ions and the first set of interconnect qubits, collecting the first set of memory qubits into a parcel, distilling the parcel and one or more additional parcels into one or more distilled parcels, transferring the one or more distilled parcels to a computation system to execute one or more quantum algorithms using resource states in the distilled parcels, entangling, during the execution of the one or more quantum algorithms, a third set of interconnect qubits with a fourth set of interconnect qubits, and entangling, during the execution of the one or more quantum algorithms, a second set of memory ions with the third set of interconnect ions.

QUANTUM ERROR CORRECTION WITH LEAKAGE

Absstract of: AU2025228868A1

A quantum computing system and a method of performing a quantum error correction code are disclosed. A determination is made that a leakage event has occurred at a quantum device. A plurality of decoding hypergraph hyperedges potentially affected by the leakage event are determined. The plurality of decoding hypergraph hyperedges are adjusted in accordance with the leakage event.

QUANTUM COMPILER

Absstract of: AU2024419285A1

A computer-implemented method, system and computer-readable medium for compiling a quantum circuit. A geodesic is calculated between a target qubit transformation, which acts on multiple qubits, and a parameterised initial qubit transformation. The parameters of the initial qubit transformation are iteratively updated to follow the geodesic to closely approximate the target qubit transformation.

PARAMETER-SETTING METHOD, SYSTEM, AND APPARATUS, DEVICE, STORAGE MEDIUM, AND PROGRAM PRODUCT

Absstract of: US20260212242A1

A parameter setting method, apparatus, and computer-readable storage medium for optimizing database parameters using quantum algorithms. The method obtains parameter value ranges and an objective function measuring database performance metrics. A Traveling Salesman Problem model is constructed where paths represent parameter value combinations and path lengths correspond to the objective function. A quantum algorithm model is constructed based on the TSP model and used to solve for the optimal solution. Database parameters are then set according to the parameter value combination corresponding to this optimal solution, enabling efficient database optimization through quantum computing approaches to combinatorial optimization problems.

SUPERCONDUCTING QUANTUM CIRCUIT ELEMENT AND SUPERCONDUCTING QUANTUM COMPUTER

Absstract of: US20260213749A1

An object of the invention is to provide a magnetic flux type superconducting quantum circuit element and a superconducting quantum computer using the element that can withstand anharmonicity in practical use and achieve high density by not adding a shunt capacitor, and implements improvement in a coherence time. A large-area junction magnetic flux type superconducting quantum circuit element is a superconducting quantum circuit element, the superconducting quantum circuit element is based on a magnetic flux type superconducting quantum circuit element which has three Josephson junctions in one loop and in which an a junction ratio is introduced, the α junction ratio indicating that an area of one Josephson junction among the three Josephson junctions is α times (0.3≤α≤0.7) an area of the other two Josephson junctions having equal areas.

QUANTUM PROCESSING DEVICE AND METHOD

Absstract of: US20260212251A1

0000 A quantum processing device comprising at least one bilinear array of quantum dots, each array being configured to hold a plurality of spin qubits. The device further comprises a controller configured to control the coherent transportation of one or more of the plurality of qubits within each array to implement a quantum error correction code (QECC), wherein the QECC encodes the collective state of the spin qubits of the respective array as a corresponding first-level (L1) logical qubit.

RESONATOR

Absstract of: US20260212244A1

0000 A quantum processing circuit comprising a substrate and one or more resonators on the substrate. The one or more resonators comprise a set of two or more conducting traces on the surface of the substrate, and all traces are substantially parallel to each other. Separation gaps extend from each trace to the adjacent trace throughout a resonator region.

DIGITIZED COUNTERDIABATIC QUANTUM OPTIMIZATION METHOD FOR PROTEIN FOLDING

Absstract of: US20260212949A1

0000 The invention relates to a computer-implemented method for solving an optimization problem for the folding of a protein with a given amino acid sequence wherein a Hamiltonian function encoding the problem is to be minimized. The method comprises the following steps:—choosing a lattice model,—calculating the amino acids of the given protein sequence in the lattice model such that the interaction energy of the amino acids is minimized, thereby creating a problem Hamiltonian whose ground state shows the configuration of the concerned protein in the given lattice, and—performing an optimization routine to obtain the final Hamiltonian in the ground state reflecting the solution to the optimization problem.

DRIVE CONTROLLER FOR QUBIT

Absstract of: US20260212243A1

Example embodiments relate a drive controller for qubits of a quantum computer. An apparatus for driving at least one qubit may comprise: at least one drive circuit configured to receive a control data stream representing at least one gate sequence for the at least one qubit and generate a pulse sequence for the at least one qubit, the pulse sequence being based on the at least one gate sequence.

METHODS AND SYSTEMS FOR ENHANCING DETECTION OF FRAUDULENT AUTHENTICATION DATA

Absstract of: US20260213916A1

0000 A method for enhancing detection of fraudulent authentication data includes receiving, by an electronic device, data during an authentication transaction, computing a feature vector from the received data, and normalizing the feature vector. The method also includes encoding the normalized feature vector into qubits, expanding, using at least one quantum algorithm, the normalized feature vector into a high-dimensional space, and detecting in the high-dimensional space anomalies indicative of fraud based on the qubits. Furthermore, the method includes calculating, based on the detected anomalies, a confidence score reflecting a likelihood that the received data is genuine and comparing the confidence score against a threshold value. In response to determining the confidence score fails to satisfy the threshold value, the method determines that the received data requires secondary authentication.

INFORMATION PROCESSING PROGRAM, INFORMATION PROCESSING METHOD, AND INFORMATION PROCESSING DEVICE

Absstract of: EP4779528A1

An information processing device executes a quantum circuit multiple times and classifies combinations of determination results of first conditional branches in a first portion of the quantum circuit into multiple groups, based on the similarity of the combinations of the determination results of a second conditional branch in the second portion. The information processing device generates first information indicating a method of allocating physical qubits to the first portion, and generates and associates with each group, second information indicating a method of allocating physical qubits to the second portion. After executing the first portion according to the generated first information, the information processing device controls an executing unit to execute the second portion according to any of the second information, according to the current combination of the determination results of the first conditional branch.

COMPUTER PROGRAM, QUANTUM COMPUTATION SUPPORT METHOD, AND INFORMATION PROCESSING APPARATUS

Nº publicación: EP4779529A1 22/07/2026

Applicant:

FUJITSU LTD [JP]
FUJITSU LIMITED

Absstract of: EP4779529A1

An information processing apparatus divides a quantum circuit into subcircuits each assigned to one of a plurality of quantum processors. The information processing apparatus predicts, for each of the subcircuits, fidelity when the subcircuit is executed by the quantum processor assigned thereto. The information processing apparatus repeats the process of dividing the quantum circuit into the subcircuits by increasing the number of subcircuits and the process of predicting the fidelity until the fidelity satisfies a predetermined criterion. When the criterion is satisfied, the information processing apparatus instructs a quantum computer to execute each of the subcircuits by the quantum processor assigned thereto. The information processing apparatus calculates, by classical computation, a computation result of the quantum circuit based on execution results of the subcircuits.